Can Buccochromis rhoadesii and Cardinal Shrimp (Sulawesi) Live Together?

Buccochromis rhoadesii is a semi-aggressive species (8/10), while Cardinal Shrimp (Sulawesi) is peaceful (0/10). This notable difference means Buccochromis rhoadesii may occasionally assert dominance over Cardinal Shrimp (Sulawesi).

Large aggression gap (8 points) between Buccochromis rhoadesii and Cardinal Shrimp (Sulawesi) increases stress risk for the more peaceful fish.

Buccochromis rhoadesii and Cardinal Shrimp (Sulawesi) both frequent the Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

There is a critical concern: the Piscivore (Eats small/nano fish) behaviour of one fish directly conflicts with the Nano / Bite-sized (Predation Risk) trait of the other — piscivorous fish will prey on nano-sized tank mates..

Additional behavioural considerations to keep in mind: Aggressive fish may bully and stress shy, slow-moving species. Hyperactive swimmers can stress shy, slow-moving species through constant motion.

The safe temperature window for both species falls between 26°C and 28°C. Aim for the midpoint of this range (around 27.0°C) for optimal comfort.

Both fish can tolerate a pH between 7.8 and 8.5. Maintaining a stable value within this band is more important than hitting an exact number.

Hardness requirements are incompatible: Buccochromis rhoadesii needs 10–25 dGH while Cardinal Shrimp (Sulawesi) requires 4–8 dGH.

To house Buccochromis rhoadesii and Cardinal Shrimp (Sulawesi) together, plan for an aquarium of at least 600 litres with a minimum length of 180 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.

Specific environmental needs for this combination include: Sand (Sifters), Established Algae (Otocinclus), Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.

Buccochromis rhoadesii and Cardinal Shrimp (Sulawesi) are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.